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target-i386: Implement BZHI 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-01-23 17:01:10 -08:00
parent bc4b43dc2f
commit 02ea1e6b4f
1 changed files with 27 additions and 0 deletions
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27
target-i386/translate.c
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@ -4072,6 +4072,33 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
}
break;
case 0x0f5: /* bzhi Gy, Ey, By */
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI2)
|| !(s->prefix & PREFIX_VEX)
|| s->vex_l != 0) {
goto illegal_op;
}
ot = s->dflag == 2 ? OT_QUAD : OT_LONG;
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
tcg_gen_ext8u_tl(cpu_T[1], cpu_regs[s->vex_v]);
{
TCGv bound = tcg_const_tl(ot == OT_QUAD ? 63 : 31);
/* Note that since we're using BMILG (in order to get O
cleared) we need to store the inverse into C. */
tcg_gen_setcond_tl(TCG_COND_LT, cpu_cc_src,
cpu_T[1], bound);
tcg_gen_movcond_tl(TCG_COND_GT, cpu_T[1], cpu_T[1],
bound, bound, cpu_T[1]);
tcg_temp_free(bound);
}
tcg_gen_movi_tl(cpu_A0, -1);
tcg_gen_shl_tl(cpu_A0, cpu_A0, cpu_T[1]);
tcg_gen_andc_tl(cpu_T[0], cpu_T[0], cpu_A0);
gen_op_mov_reg_T0(ot, reg);
gen_op_update1_cc();
set_cc_op(s, CC_OP_BMILGB + ot);
break;
case 0x0f3:
case 0x1f3:
case 0x2f3: